<template>
  <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>参数列表</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card>
      <el-alert title="注意: 只允许为第三级分类设置相关参数!" type="warning" :closable="false" show-icon>
      </el-alert>
      <el-row>
        <el-col class="cat_opt">
          <span>选择商品的分类: </span>
          <el-cascader :options="cateList" :props="cateProps" v-model="selectedCateKeys" @change="handleChange">
          </el-cascader>
        </el-col>
      </el-row>
      <el-tabs v-model="activeName" @tab-click="handleTabClick()">
        <el-tab-pane label="动态参数" name="many">
          <el-button type="primary" size="mini" :disabled="isBtnDisabled"
            @click="addDialogVisible=true">添加参数</el-button>
          <el-table :data="manyTableData" border stripe>
            <el-table-column type="expand">
                <template slot-scope="scope">
                    <el-tag v-for="( item,i) in scope.row.attr_vals" :key="i" closable >{{item}}</el-tag>
                </template>
            </el-table-column>
            <el-table-column type="index"></el-table-column>
            <el-table-column label="参数名称" prop="attr_name"></el-table-column>
            <el-table-column label="操作">
              <template slot-scope="scope">
                <el-button size="mini" type="primary" icon="el-icon-edit"
                  @click="showEditDialog(scope.row.attr_id)">编辑</el-button>
                <el-button size="mini" type="danger" icon="el-icon-delete"
                  @click="removeParams(scope.row.attr_id)">删除</el-button>
              </template>
            </el-table-column>
          </el-table>
        </el-tab-pane>
        <el-tab-pane label="静态属性" name="only">
          <el-button type="primary" size="mini" :disabled="isBtnDisabled"
            @click="addDialogVisible=true">添加属性</el-button>
          <el-table :data="onlyTableData" border stripe>
            <el-table-column type="index"></el-table-column>
            <el-table-column label="属性名称" prop="attr_name"></el-table-column>
            <el-table-column label="操作">
              <template slot-scope="scope">
                <el-button size="mini" type="primary" icon="el-icon-edit"
                  @click="showEditDialog(scope.row.attr_id)">编辑</el-button>
                <el-button size="mini" type="danger" icon="el-icon-delete"
                  @click="removeParams(scope.row.attr_id)">删除</el-button>
              </template>
            </el-table-column>
          </el-table>
        </el-tab-pane>
      </el-tabs>
    </el-card>

    <el-dialog :title="'添加' + titleText" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed">
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px">
        <el-form-item :label="titleText" prop="attr_name">
          <el-input v-model="addForm.attr_name"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="dialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addParams">确 定</el-button>
      </span>
    </el-dialog>

    <el-dialog :title="'修改' + titleText" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="100px">
        <el-form-item :label="titleText" prop="attr_name">
          <el-input v-model="editForm.attr_name"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editParams">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>


<script>
  export default {
    data() {
      return {
        cateList: [],
        cateProps: {
          value: 'cat_id',
          label: 'cat_name',
          children: 'children'
        },
        selectedCateKeys: [],
        activeName: 'many',
        activeName: 'second',
        manyTableData: [],
        onlyTableData: [],
        addDialogVisible: false,
        editDialogVisible: false,
        addForm: {},
        editForm: {},
        addFormRules: {
          attr_name: [{
            required: true,
            message: "请输入参数名称",
            trigger: 'blur'
          }]
        },
        editFormRules: {
          attr_name: [{
            required: true,
            message: "请输入参数名称",
            trigger: 'blur'
          }]
        }
      }
    },

    created() {
      this.getCateList()
      // this.getParamsData()
    },

    methods: {
      // 选择动静态参数
      handleTabClick() {
        // console.log(this.activeName)
        this.getParamsData()
      },
      async getCateList() {
        const {
          data: res
        } = await this.$http.get('categories')
        if (res.meta.status !== 200) {
          return this.$message.error('获取商品分类列表失败!')
        }
        this.$message.success('获取商品分类成功!')
        this.cateList = res.data
      },
      // 选择商品分类
      handleChange() {
        this.getCateList()
      },

      // 选择动静态参数 2
      async getParamsData() {
        if (this.selectedCateKeys.length !== 3) {
          this.selectedCateKeys = []
          return
        }
        // console.log(this.selectedCateKeys)
        const {
          data: res
        } = await this.$http.get(`categories/${this.cateId}/attributes`, {
          params: {
            sel: this.activeName
          }
        })
        if (res.meta.status !== 200) {
          return this.$message.error('获取参数列表失败')
        }
        this.$message.success('获取参数列表成功!')
        // this.xxxx = res.data
        res.data.forEach( item=> {
            item.attr_vals = item.attr_vals ? item.attr_vals.split(','): []
        })

        console.log(res.data)
        if (this.activeName === 'many') {
          this.manyTableData = res.data
        } else {
          this.onlyTableData = res.data
        }
      },
      addDialogClosed() {
        this.$refs.addFormRef.resetFields()
      },



      editDialogClosed() {
        this.$refs.editFormRef.resetFields()
      },
      editParams() {
        this.$refs.editFormRef.validate(async valid => {
          if (!valid) return
          const {
            data: res
          } = await this.$http.put(`categories/${this.cateId}/attributes/${this.editForm.attr_id}`, {
            attr_name: this.editForm.attr_name,
            attr_sel: this.activeName
          })
          if (res.meta.status !== 200) {
            return this.$message.error('修改参数失败!')
          }
          this.$message.success('修改参数成功!')
          this.editDialogVisible = false
          this.getParamsData()
        })
      },
      addParams() {
        this.$refs.addFormRef.validate(async valid => {
          if (!valid) return
          const {
            data: res
          } = await this.$http.post(`categories/${this.cateId}/attributes`, {
            attr_name: this.addForm.attr_name,
            attr_sel: this.activeName
          })
          if (res.meta.status !== 201) {
            return this.$message.error('添加参数失败!')
          }
          this.$message.success('添加参数成功!')
          this.addDialogVisible = false
          this.getParamsData()
        })
      },
      async removeParams(attr_id) {
        const confirmResult = await this.$confirm('此操作将永久删除该参数, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err => err)
        if (confirmResult !== 'confirm') {
          return this.$message.info('已取消删除')
        }


        const {
          data: res
        } = await this.$http.delete(`categories/${this.cateId}/attributes/${attr_id}`)
        if (res.meta.status !== 200) {
          return this.$message.error('删聊失败')
        }
        this.$message.success('删除成功!')
        console.log(res.data)
        this.getParamsData()
      },
      async showEditDialog(attr_id) {
        const {
          data: res
        } = await this.$http.get(`categories/${this.cateId}/attributes/${attr_id}`, {
          params: {
            attr_sel: this.activeName
          }
        })
        if (res.meta.status !== 200) return this.$message.error('获取参数信息失败!')
        // return this.$message.success('获取参数信息成功!')
        this.editForm = res.data
        console.log(res.data)
        this.editDialogVisible = true
      }
    },
    computed: {
      isBtnDisabled() {
        if (this.selectedCateKeys.length !== 3) {
          return true
        }
        return false
      },
      cateId() {
        if (this.selectedCateKeys.length === 3) {
          return this.selectedCateKeys[2]
        }
        return null
      },
      titleText() {
        if (this.activeName === 'many') {
          return "动态参数"
        }
        return "静态属性"
      }
    }

  }
</script>

<style lang="less" scoped>
  .cat_opt {
    margin: 15px 0;
  }
  .el-tag{ margin: 10px;}
</style>
